Fluid motor



Oct'. 7, 1952 R.'DE1BE| 2,612,874 i FLUID MOTOR Filedv July 25, 1949 2--2 of Fig. 1; f

Patented Oct. 7, 1,952

. `'llricojProductsC Applicants This invention relates to a fluid actuated otor especially designed for automotive usean''fpri# marily for windshield cleaning. the same lrbeingv an improvement on that constitutin'gthe subject matter of copendin'g application,SeriallNoBA l VWindshield cleaners are-'largely suction 'actuated from the intake manifoldgthe pressure iiifluence of which is fluctuating in character? and at times quite inadequate.- IThe'--wip'ef'-motor most frequently embodies"apaddle'v 'or-*variellike The foregoing and otherobjectsyvi'll rnanifest` themselves as Vthe following;` description progresses, reference being hadV thereintotlie accompanying drawing, wherein Fig. l is a substantially,radialstion through a motor constructed inacco dance with the present inventiony w L l Fig. 2 is a cross-sectional view about cfr-line"k Fig. 3 is a fragmentary of Fig.2;

Fig. 4 is a view of the shaftunitl.' partly 'in sec'- tion; and

Fig. 5 is a fragmentary sectional view of the motor.

Referring more particularly to the drawing, the numeral I designates the motor shaft, 2 the vanelike piston or paddle operatively connected to the shaft for oscillating the same. and 3 the motor casing having an arcuate chamber 4 therein. The chamber is closed by a removable section or cover 5 and is likewise formed with an arcuateV chamber 6 of smaller radius for receiving the upper portionof the piston where it extends beyond the shaft. At opposite sides of the chamber 4 the shaft is journaled in bearings in the casing and its cover, as indicated at 1. One end of the shaft carries a coupling part 8 to which an accessory is connectible, such as a windshield wiper, by suitable means, not shown. The opposite end of the shaft extends within the valve chamber 9 which contains automatic snap action valve about Lori une a-,a

213; 1949, 'Serial efclaims. (01.121-g-a7) 'Raymond` Deibel,j ,East Aurora,

- orporation,

N. Y' z assignent Buffalo, N- Y.

mechanism for Ioperatively reversing.- th'ejpressure di'erentialapplications onfth'e opposite sides-.of thefpaddle; or piston; all :as iswell knownin the automotivefindustry.- v r j l v`fInIl accordance: with the-:present invention? the pistoni-basa certain relative vplaymor freedomgof movement with respect to'iits shaft.. Therefore,- should there be any misalignrnentor discrepancyl in the relation between the shaft bearing and the walls 'ofthemotor chamber 4f lytloe.` piston will freely-.follow the walls oflthey chamber-.and auto-l matically adjust itself on athe .oscillating motor y shaft; .'Io this end .the fmotor shaft.l is v.provided with alaterally extendingcrank partginthe form Y of\one .ormore pins .or rodsl, looselyffitting ,be.'

tween the two opposedzsectionsfl Lof .th'e'piston'. In order .toi 'r-naintainl a; limitedfreedom of: move-- ment between the crank part-'and the piston-,the sections ofxthe latter .are .spaced apartby unter-.-l

posed tubular sustaining-:spacers I2 and-the rivets l3;or other suitablefasteners.:

The inner plates 1.4. of` the piston (sections, may haveannular. -tgrooves f1.5 about the riyetstg .re ceiverthentubulanspacers; 'I'hese plates alsohave. wear padsin the. formfof transverse .ribs 16 upon whichmthe`- outer-end portionsbf the cra-nk pins ride.; Eachncrank pin mayL 1be;y readily.V connected to..` the shaft-by; drivingf the lbur ,enlargement l 'If thereon into a diametricalfholefthrough the shaft,

leaving its oppositeendsprotruding. This affords.

a practical mode of-connecting the parts. The outerv platesl may ialsoghave pressed-ribs ,I9 for reinforcement.- f;-

l, The.` freedom tofv axiale-movement. ,of the: piston sections. l l: -zonz the shaftiris, confined by spacedy shoulders 20 between which a cooperating flat shoulder 2|, shaped from the inner plate I4, plays. The shoulders may be formed by reducing the diameter of the central part of the shaft. A further reduction at 22, between the shoulders, affords ample'clearance for the uppermost spacer l2 to accommodate the floating motion of the vane-like piston. This will also permit of slight angular displacement of the piston should the crank pins be inaccurately placed on the shaft. Should the pins be sprung out of alignment they may possess inherent resiliency to facilitatethe self-adjustment of the piston thereon.

Thepiston is free to float and follow the contour of the path delineated by the chamber walls free from any binding action of the piston upon such walls or of the shaft in its bearings. Therefore, the piston will respond to a smaller pressure differential head, relative to the former fixedly related parts, and thereby continue a 24 for being suction held thereon in secuririglv4 the piston arrested. A practical manner of mounting this valve is to support it on a separate' boss 25 and then to anchor-thelattenupon `the L un'itingffthe piston-'sections together in a manner proper outer plate I8 by one of the rivets-1132M- Guiding lugs 26, struck up from thepIate, re;

ceive a radial extension 21 from 'the"bos"s"2'5' to facilitate the DrOper placement of thezla'tteni z The motor operates with an easy and free action devoid of any binding which Wouldfotherwise require a labored movement,fand'whilefthe foregoing descriptionV has beengiven;in.detail it is without thought of limitation-since the inventive principles involved are capable ofassumingvother physical embodiments without depart. ing from the spirit ofthe invention and thefscope of the appended claims. .-1.. i. 5;

yWhat is claimed is: 1. A fluid. motor comprising anal-cuate cham-,f ber,v an oscillatory shaft journaled therein .and formedy with a-radial recessya piston ,movable back and-forth in thevchamber in fluid sealed contactwith the chamber wall, said' piston `being in=ltheform of a vane extending radi-ally. from thelshaftand lying'substantiallyin; the plane of the axis ofoscillation, and a radial'icrank-pin.

secured in' the recess of the shaft andhavingA a' play.r connection with the piston forlimited radialv movement. in such plane... i 2. A fluid motor comprising an arcuate. chamber, l. an ,oscillatory v.shaft journaled therein `and carrying radialv pins spaced alongrtheishaftwithin thechamber. and a pistonfmovablebackrand forth in the chamberin fluid sealed contact with the chamber .wally and having .any inner' chamber receiving the'shaftiand its pinsforlimited rela-sf tive' movementrlwhereby the shaft andi the piston may. move independentlyof eachothersto accom'- modate any .misalignment Ybetween theesha'ft bearing and the walls olf-the chamber.. 'f

J3. A .fluid.motorfcomprisinga chamber; ing a parking valve seat, an oseillatoryl'shaft journaled in theehamber, apiston' movable back and.' forth in l the chamber- -andfloperativelyf -cony to. enable relative nected to the shaft for driving the same, said piston having spaced guiding lugs, a boss seating on the piston and having a radial positioning part slidably fitting between the lugs, and a parking valve carried -by the boss for engaging with the seat.

4. A fluid motor comprising an arcuate chamber, an oscillatory shaft journaled therein and havinga diametral hole therethrough, a piston movable backland forth 4in the chamber in fluid sealed contact with the chamber wall, and a pin having a driven fit in the shaft hole and ex- J tending radially therefrom in opposite directions, `said piston comprising spaced sections arranged onoppositesides of the pin, and fastening means movement between the piston .'afAlluid motor comprising an arcuate chamber, an oscillatory shaftk journaled concentrically therei-nfra lpiston,:movable back and forth in the chamber; infiuidsealed contact with the chamber wajllkithe piston comprisingl opposed sections arran-gedt enoppositesides ofthe shaft and movably connectedtherete,.each piston section comprisinginner and .outerA plates. clampingly embracing an interposed packing member, said cbamberhavingf-a .parkinglvalve seat, a parking valve, and a fastener forfseuring the piston sections.- together and serving also. to anchoring the parking valvegonethe piston, the outer plate having aaguideypressed therefrom to receive a positioninepert 0n; theparkine valve. t l. n 67 avAyiliuldmotor.comp/rising an arcuate chamberan oscillatoryv Shaft journaled therein, a

piston movable 1backend forth in the chamber in fiuidlsealedgoontact .with the chamber wall, said-piston comprising spaced sections arranged, onfr opposite sides of`- 4the shaft, with each section comprising inner andouter body plates with an interposed packing ,r member therebetween, vthe inner.body-,plates,having opposedr wear pads pressed therefrom. and a drive pin fixed on the shaftand fridingbetweenand uponthe wearpads While per mittivnig2 the;piston to oat radially of and upontheshait. ,f Y l RAYMoNDDErBEL. v

, cas-01m f The following references are 'of' .record in the file :of.-this;,patent:` 1 l UNITED STATES PATENTS Number vName Date 2,235,621 l l Sibley.'y June 9L 1942 

